PLTJMATELLITES. 
293 
Sub-class PHYLACTOLiEMATA, Allman. 
Family PLUMATELLIDJE. 
Diagnosis. 
Phylactolsemata with a rooted zoarium. 
PLUMATELLITES, Fric\ 1901. 
prolifer us, Fric. 
Syx. Plumatelliies proliferus, Fric, 1901. Perucer Sch. : Arch, naturw. 
Landesf. Bohm. vol. xi. No. ii. pp. 178, 179. 
Distrib. — Perucer Schichten (Cenomanian) : Kounic, Bohemia. 
The Bryozoa of the sub-class Phylactolaemata, being soft-bodied, 
can only rarely be expected as fossils ; but Dr. Fric has identified 
an incrusting organism on a Unio from the fresh-water Cenomanian 
beds of Bohemia as a fossil Plumatella. The organism is branched, 
and is 8 mm. long with branches from ‘6 to 1 mm. wide. The 
fossil certainly resembles a Plumatella, though the structure is 
too imperfectly preserved for the identification to be certain ; but 
the specimen is of interest as the only fossil representative of the 
Phylactolaemata. 
